Centrifugal pump.



UNITED STATES PATENT OFFICE.

ALBERT N. COOPER, OF ALBUQUERQUE, NEW MEXICO.

CEN'IRIFUGAL PUMP.

Specification of Letters Patent.

Patented Sept. 15, 1914.

Application filed February 9, 1914-. Serial 1T0. 817,650.

readily had access to for repairing and replacing, and wherein the rotating and propelling element is operated by a shaft and constructed in the form of a spiral carrying an incasing member, the eduction end being a reversely disposed stationary spiral so as to assist in the whirling action imparted to the water during the elevating thereof.

A further object of the present invention is the provision of a novel mounting for the lower end ofgthe shaft carrying the various propelling members whereby the same is readily adjusted without moving the caslng so that no weight is thrown upon the propelling members thereof during the rotation of the shaft.

lVith the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

In the drawingsFigure 1 is an enlarged sectional view showing a portion of a well casing with two of the present centrifugal pump elements disposed in operable relation to each other; Fig. 2 is an enlarged detail vertical sectional view through one of the pump elements of the present invention.

Referring to the drawings, the numeral 1 designates the well casing which has mounted adjacent the bottom below the watersurface thereof, a supporting structure 2 which has depending therebelow the inlet pipe 3 provided with a strainer 4 and a check valve 5.

Connected in communication with the pipe 3, and above the support 2 to which it is also connected is the lower pump element 6,

which is in communication through the pipe 7 with the upper pump element 6, there be ing any number of these elements according to the depth of the well so that the water is raised in successive stepsiintil ejected from the outlet (not shown). Disposed concentrically of the various pump elements and the pipe 7 is an operating shaft 8, which is rotated in any desired manner from the upper exterior portion of the well.

ach pumping element as illustrated in Fig. 2, consists of the lower section 9 and the upper section 10, both sections being secured together as illustrated by the screw threads 11 so that the same may be readily separated when desired to have access to the interior parts of the mechanism.

The lower ortion of the member 9 is constructed in the form ofafiange 12 whereby the same may be readily connected to the support 2 and such member is provided with the induction port 13 which is in communication with the pipe 3 and with the fixed water guiding or directing blades 14 which is constructed in the form of a spiral passage way so as to provide the central hub 15 in whose lower end of the central bore of which is adjustably mounted, the thrust screw or hearing 16 for the reception of the lower end 17 of the shaft 8. A thrust ball may be positioned above the screw 16 to reduce the friction while disposed about the shaft 8 is a hub 23, which may also carry a roller bearing or in fact any other bearing that will reduce the friction of the shaft.

Keyed to the shaft within the lower chamber 21 of the section 10 is the hub 18 of the rotary water elevating member 19 which is constructed in the form of a spiral blade having the incasing band 20 which is disposed to fit for rotation adjacent the walls of the casing or chamber 2lso that the full inner space of the spiral member 19 will be active in elevating the water through the various members 6 and 6 to the outlet of the pump (not shown).

In the upper portion of the member 10 is provided the outlet chamber 22,wliich leads into the lower end of the pipe 7 \Vith this structure due to the key 24 by means of which the hub 18 of the rotating member 19 is keyed to the shaft it is impossible to withdraw the shaft from the section 1O. but by disconnecting the section 10 from the section 9, the lower end of the shaft within the hub 15 may be withdrawn and access be had to the rotating member 19 Which may then be removed to release the shaft when necessary.

Vhat is claimed is:

1. A centrifugal pump, having a two-part casing provided with a reduced inlet and outlet, the upper part having a cylindrical chamber, a stationary guiding spiral carried in the lower part and having its hub disposed in spaced relation to and concentrically of the inlet, a rotatory shaft journaled in the hub and extending concentrically of the outlet, a hub attached to the shaft, an elevating spiral carried by the last hub and mounted for rotation Within the chamber of the casing, and a confining and reinforcing rim attached to the periphery of the elevating spiral, said rim being in close proximity to the Wall of the chamber.

2. A centrifugal pump, having a two-part casing provided With a reduced inlet and outlet, the upper part having a cylindrical chamber, a stationary guiding spiral carried in the lower part and having its hub disposed in spaced relation to and concentrically of the inlet, a rotary shaft journaled in the hub and extending concentrically of the outlet, a hub attached to the shaft, an eievatin spiral carried by the last hub and mounte for rotation Within the chamber of the casing, a confinin and reinforcing rim attached to the periphery of the elevating spiral, said rim being in close proximity to the Wall of the chamber, and a lixed hub mounted in the upper part of the casing and cooperating with the hub of the lower part to properly support the shaft.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two Witnesses.

ALBERT N. COOPER. Witnesses:

FRANK WEEKS, A. L. MARTIN. 

